A real-time acquisition and display system for multi-point deflection of a bridge

Abstract

The invention discloses a real-time multi-point flexibility collecting and display system of a full bridge. The system comprises a host monitoring PC, a CAN bus and a USB-to-CAN bus interface through which the host monitoring PC is connected with the CAN bus, an auxiliary node of the CAN bus is connected with clinometers, the host monitoring PC is internally provided with a data collection system, and the data collection system collects and displays data via the clinometers. The system is characterized by high frequency, multi-point synchronization and high instantaneity, and has significant engineering and application values.

Description

technical field [0001] The invention relates to a system for real-time acquisition and display of multi-point deflection of the whole bridge, which belongs to the technical field of civil structures. Background technique [0002] The detection and monitoring of bridge deflection is an important indicator to evaluate whether the bridge performance is good or not. It is particularly important to build a health monitoring system for long bridges and conduct regular and irregular safety inspections for small and medium bridges. Therefore, how to accurately grasp the bridge structure itself and The difference in deflection measurement, in view of the differences in bridge span, detection and monitoring accuracy requirements, operating conditions and other factors, reasonably select a stable and accurate bridge deflection detection equipment and method, in bridge monitoring and detection, dangerous bridge renovation and new bridge acceptance It is very important to ensure the norm...

AI Technical Summary

Problems solved by technology

For example, the application number is 201410379770.1, the publication number is CN 105320596A, and the name is "a bridge deflection test method and system based on an inclinometer". When the positions of the cross-sections that need to measure the deflection are not equally spaced, it cannot be tested due to theoretical limitations

Therefore, the existing bridge deflection testing method and system have the following defects: 1. Large environmental interference and low test accuracy; 2. Single test point locations (mostly mid-span, quarter point, and eighth branch), and a small number of test points (Due to technical limitations, it is difficult to achieve multi-point synchronous acquisition); 3. It is impossible to display the deformation of the bridge in real time, and there is a lag in the acquisition of deflection changes at key positions

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